2018 Cadillac CT6 Plug-in Hybrid: Recalls, Problems & MPG
Here are the deets on the 2018 Cadillac CT6 Plug-in Hybrid: 2 recalls, 3 owner complaints.

Recalls
2 vehicle recalls from the manufacturer. Repairs are free. Check your VIN to see if one is still open on your car.
Child seat, Seats Vehicle recall #18V437000 · 2018 · 22,043 vehicles
What's wrong: The inboard child seat anchorage bars May have had excess structural adhesive applied during assembly, which can interfere with the installation of a child seat. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (fmvss) number 225, "child restraint anchorage systems."
Why it matters: If the child seat cannot be attached correctly to the anchorage bar, there is an increased the risk of injury.
The fix: Gm will notify owners, and dealers will inspect, remove any excess adhesive, and apply anti-corrosion primer to the inboard child seat anchorage bars, free of charge. The recall began August 3, 2018.
Seat belts Vehicle recall #18V673000 · 2018 · 15,800 vehicles
What's wrong: Certain second-row or third-row rear seatbelts retractor assemblies May not automatically lock when the seatbelt is fully pulled out of the retractor, possibly preventing a child seat from being properly secured. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (fmvss) number 208, "occupant crash protection."
Why it matters: If the child seat is not properly secured in the event of a crash, it can increase the risk of injury.
The fix: Gm will notify owners, and dealers will inspect the rear seatbelt retractors and replace them if necessary, free of charge. The recall began November 7, 2018.
Most-reported problems
Owner complaints filed with NHTSA, by component. One complaint can list several components. 0 mention a fire, 0 injuries and 0 deaths were reported.
What owners describe
- Electrical (1): no single recurring theme in the descriptions.
- Transmission & drivetrain (1): no single recurring theme in the descriptions.
- Stability control (1): no single recurring theme in the descriptions.
- Engine (1): no single recurring theme in the descriptions.
The 2018 Cadillac CT6 Plug-in Hybrid has 3 owner complaints, ranking #2 of 2 CT6 Plug-in Hybrid model years for complaints (well below the 6 average). Neighboring years: 2017 (9 complaints, 1 recalls).
Want the full repair deets? Get the factory manual.
Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2018 Cadillac CT6 Plug-in Hybrid.
Closest thing to the factory manual for most years. Pay once, keep it.
Most $25–$78, one-timePro-shop repair procedures, wiring diagrams and TSBs for your exact car.
From $19.99/mo · $39.99/yrOEM procedures, specs and recall/TSB info, the same source many shops use.
From $19.99/mo · $59.99/yrStep-by-step photos written from a real teardown. Great for first-timers.
Books ~$30–$40 · AllAccess $34.99/moHeads up: we may earn a commission if you buy through these links, at no extra cost to you. Prices checked 2026-10 and can change. We never host or link to pirated manuals. Disclosure
FAQ
Does the 2018 Cadillac CT6 Plug-in Hybrid have any recalls?
Yes. NHTSA lists 2 vehicle recalls for the 2018 Cadillac CT6 Plug-in Hybrid. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.
What are the most common 2018 Cadillac CT6 Plug-in Hybrid problems?
Owners have filed 3 complaints with NHTSA. The most-reported areas are electrical (1), transmission & drivetrain (1), stability control (1).
Where can I get a 2018 Cadillac CT6 Plug-in Hybrid repair manual?
eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.